Quality Standard:
Hollow Sections:
GB/T 13793 Longitudinal electric resistance welded steel tubes
GB/T 6728 Cold formed steel hollow sections for general structure-Dimensions,shapes,weight and permissible deviations
ASTM A500 Cold Formed Welded and Seamless Carbon Steel Steel Structural Tubing in Round and Shapes
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
EN 10210 Hot finished structural hollow sections of non-alloy and fine grain structural steels
EN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steels
JIS G 3466 Carbon steel Square for general structural purposes
BS 1387 Steel Tubes for use for Water, Gas, Air and Steam
1. Material and Standard:
GB: Q195, Q215, Q235, Q345
ASTM: GR.A, GR.B, GR.C, GR.D, DC01, DC03, 1008, 1010
JIS: SS330, SS440, SS490, SPHD, SPHE
EN BS: S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H
| Material | Grade | Chemical Composition | ||||
| C | Mn | Si | S | P | ||
| ≤ | ||||||
| Q195 | A | 0.06-0.12 | 0.25-0.50 | 0.30 | 0.050 | 0.045 |
| Q215 | A | 0.09-0.15 | 0.25-0.55 | 0.30 | 0.050 | 0.045 |
| B | 0.045 | |||||
| Q235 | A | 0.14-0.22 | 0.30-0.65 | 0.30 | 0.050 | 0.045 |
| B | 0.12-0.20 | 0.30-0.70 | 0.045 | |||
| C | ≤0.18 | 0.35-0.80 | 0.040 | 0.040 | ||
| D | ≤0.17 | 0.035 | 0.035 | |||
| Q345 | B | 0.12-0.20 | 1.20-1.60 | 0.55 | 0.045 | 0.045 |
| C | 0.12-0.20 | 1.20-1.60 | 0.55 | 0.035 | 0.035 | |
| Mechanical Properties | |||
| Material |
Tensile strength Mpa |
Yield strength Mpa (Min.) |
Elongation(%) |
| Q195 | 315-430 | 195 | 32 |
| Q215 | 335-450 | 215 | 31 |
| Q235 | 375-500 | 235 | 26 |
| Q345 | 470-630 | 345 | 21 |
3. Surface: Lightly oiled, hot dip galvanized, Electro galvanized, Black
4. Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips
5. Non-Destructive Test: Visual Testing; Radiographic Testing; Ultrasonic Testing; Magnetic Particle Testing; Penetrant Testing; Eddy current Testing etc.
We accept Third Party Inspection, such as SGS, BV, Lloyds, Moody etc.
Title：Erw welded square steel pipe& rectangle steel pipe Website：http://www.lxtsg1.com/cpfl9/384.html